799/243 heads on a LS2/LQ9 put you at 10.9:1 compression. No where near pump gas limits. Don't waste your time with those junky 5.3 heads on the bigger bore motor.
799/243 heads on a LS2/LQ9 put you at 10.9:1 compression. No where near pump gas limits. Don't waste your time with those junky 5.3 heads on the bigger bore motor.
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